eqn/diacrit.c

   1 #include "e.h"
   2 #include "y.tab.h"
   3
   4 extern double Dvshift, Dhshift, Dh2shift, Dheight, Barv, Barh, Ubarv, Ubarh;
   5
   6 void diacrit(int p1, int type)
   7 {
   8         int c, t;
   9
  10         c = salloc();
  11         t = salloc();
  12         nrwid(p1, ps, p1);
  13         printf(".nr 10 %gm\n", max(REL(eht[p1]-ebase[p1]-1,ps), 0));    /* vert shift if high */
  14         if (type == HIGHBAR)
  15                 printf(".nr 10 \\n(10+%gm\n", Dvshift);
  16         else if (type == LOWBAR)
  17                 printf(".nr 10 0\n");
  18         else
  19                 printf(".if \\n(ct>1 .nr 10 \\n(10+%gm\n", Dvshift);
  20         printf(".nr %d %gm\n", t, Dhshift);     /* horiz shift if high */
  21         printf(".if \\n(ct>1 .nr %d %gm\n", t, Dh2shift);       /* was .1 and .15 */
  22         switch (type) {
  23         case VEC:
  24                 printf(".ds %d %s\n", c, lookup(deftbl, "vec_def")->cval);
  25                 break;
  26         case DYAD:
  27                 printf(".ds %d %s\n", c, lookup(deftbl, "dyad_def")->cval);
  28                 break;
  29         case HAT:
  30                 printf(".ds %d %s\n", c, lookup(deftbl, "hat_def")->cval);
  31                 break;
  32         case TILDE:
  33                 printf(".ds %d %s\n", c, lookup(deftbl, "tilde_def")->cval);
  34                 break;
  35         case DOT:
  36                 printf(".ds %d %s\n", c, lookup(deftbl, "dot_def")->cval);
  37                 break;
  38         case DOTDOT:
  39                 printf(".ds %d %s\n", c, lookup(deftbl, "dotdot_def")->cval);
  40                 break;
  41         case BAR:
  42         case LOWBAR:
  43         case HIGHBAR:
  44                 printf(".ds %d \\v'%gm'\\h'%gm'\\l'\\n(%du-%gm'\\h'%gm'\\v'%gm'\n",
  45                         c, -Barv, Barh, p1, 2*Barh, Barh, Barv);
  46                 break;
  47         case UNDER:
  48                 printf(".ds %d \\v'%gm'\\l'\\n(%du-%gm\\(ul'\\h'%gm'\\v'%gm'\n",
  49                         c, -Ubarv, p1, Ubarh, Ubarh, Ubarv);
  50                 /* printf(".ds %d \\v'-%gm'\\l'\\n(%du\\(ul'\\v'%gm'\n",
  51                         c, Ubarv, p1, Ubarv);
  52                 */
  53                 printf(".nr %d 0\n", t);
  54                 printf(".nr 10 0-.1m-%gm\n", REL(ebase[p1],ps));
  55                 printf(".if \\n(ct%%2=1 .nr 10 0\\n(10-.1m\n");
  56                 break;
  57         case UTILDE:
  58                 printf(".ds %d %s\n", c, lookup(deftbl, "utilde_def")->cval);
  59                 printf(".nr %d 0\n", t);
  60                 printf(".nr 10 0-%gm\n", REL(ebase[p1],ps));
  61                 printf(".if \\n(ct%%2=1 .nr 10 0\\n(10-%gm\n", 0.1);
  62                 break;
  63         }
  64         nrwid(c, ps, c);
  65         if (lfont[p1] != ITAL)
  66                 printf(".nr %d 0\n", t);
  67         printf(".as %d \\h'-\\n(%du-\\n(%du/2u+\\n(%du'\\v'0-\\n(10u'\\*(%d",
  68                 p1, p1, c, t, c);
  69         printf("\\v'\\n(10u'\\h'-\\n(%du+\\n(%du/2u-\\n(%du'\n", c, p1, t);
  70         if (type != UNDER && type != UTILDE)
  71                 eht[p1] += EM(Dheight, ps);     /* was .15 */
  72         dprintf(".\tdiacrit: %c over S%d, lf=%c, rf=%c, h=%g, b=%g\n",
  73                 type, p1, lfont[p1], rfont[p1], eht[p1], ebase[p1]);
  74         sfree(c); sfree(t);
  75 }